EP0779532A1 - A hinge structure of a spectacle frame - Google Patents

A hinge structure of a spectacle frame Download PDF

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Publication number
EP0779532A1
EP0779532A1 EP95309030A EP95309030A EP0779532A1 EP 0779532 A1 EP0779532 A1 EP 0779532A1 EP 95309030 A EP95309030 A EP 95309030A EP 95309030 A EP95309030 A EP 95309030A EP 0779532 A1 EP0779532 A1 EP 0779532A1
Authority
EP
European Patent Office
Prior art keywords
hinge structure
sliding face
bearing
spectacle frame
temple
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95309030A
Other languages
German (de)
French (fr)
Inventor
Koji Mizuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP95309030A priority Critical patent/EP0779532A1/en
Publication of EP0779532A1 publication Critical patent/EP0779532A1/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00Constructions of non-optical parts
    • G02C5/22Hinges
    • G02C5/2281Special hinge screws
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00Constructions of non-optical parts
    • G02C5/22Hinges
    • G02C5/2209Pivot bearings and hinge bolts other than screws
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2200/00Generic mechanical aspects applicable to one or more of the groups G02C1/00 - G02C5/00 and G02C9/00 - G02C13/00 and their subgroups
    • G02C2200/20Friction elements
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2200/00Generic mechanical aspects applicable to one or more of the groups G02C1/00 - G02C5/00 and G02C9/00 - G02C13/00 and their subgroups
    • G02C2200/26Coil spring pushed upon actuation

Definitions

  • the present invention relates to a hinge structure of a spectacle frame.
  • the end pieces of a pair of lens-holding rims are connected with a pair of temples, or temple-pieces, or earpieces, by very small screws.
  • the manual touch, or feel, felt when the temples are turned over and away from the pair of lenses is an important factor affecting the handling convenience of the spectacles.
  • the touch is mainly affected by the frictional resistance between the ends of the end pieces of the rims holding the pair of lenses and the ends of the temples.
  • the conventional spectacle frame in which the frictional resistance is greatly affected by the tightening degree of the screws, has the following disadvantages.
  • the invention provides a hinge structure for a spectacle frame as defined in the appendent independent claim, to which reference should now be made. Preferred features of the invention are defined in subclaims dependent therefrom.
  • the invention may thus provide a hinge structure of a spectacle frame that overcomes the disadvantages of the conventional hinge structure, that is functionally excellent because of easy assembling, needs no complicated adjustment, and is able to keep the temple turning torque constant for a long time; and that is also excellent in appearance and design.
  • the above hinge structure of a spectacle frame has bearings formed at the ends of end pieces provided outside the rims supporting the lenses and pivotally rotatable shafts at the tips of a pair of temples are pivotally rotatably connected with them.
  • the said bearings preferably comprise enlarged portions in a shape such as a cube or sphere at the ends of the end pieces, having a vertical through-hole, a cut-out portion formed at the bottom of the said through-hole and surrounded by a top sliding face and both side contact faces, and a recess formed at the top of the said through-hole, a support face at the bottom.
  • the said temples advantageously have the pivotally rotatable shaft bent almost at right angles at its tip with some length and inserted in the through-hole of the bearing, a top sliding face near the bend to slidably contact the sliding face of the said cut-out portion, and a flange protruded at the tip of the pivotally rotatable shaft exposed from the recess.
  • a compressed elastic means such as a coil spring or a synthetic rubber cylinder, is provided around the pivotally rotatable shaft exposed in the recess between the flange and the support face.
  • the elastic means acts to give a predetermined pressure to the bearing, to keep the sliding face of the temple in slidable contact with the sliding face of the bearing.
  • a pair of rims 5 with a lens fitted in them respectively are connected and held symmetrically by a bridge 8 provided with nose pads 7 on both sides, and outside the rims 5 on both sides, a pair of end pieces 6 are provided.
  • Each symmetrical half of the hinge structure consists of a pivotally rotatable shaft 11 acting as a spindle for connection, a bearing 2 with a through-hole 21 to bear the pivotally rotatable shaft 11, and an elastic means formed as a coil spring to bear the temple turning resistance, described later.
  • the pivotally rotatable shaft 11 of the first example has external thread 11A formed at its top, and is threadedly engaged with a spherical flange 12 larger in diameter than the pivotally rotatable shaft 11.
  • the pivotally rotatable shaft 11 is bent almost perpendicularly toward the temple 1.
  • These parts: the flange 12, the pivotally rotatable shaft 11, and the temple 1, can be respectively separate parts, or they can be formed as an integral part as shown in Fig. 4.
  • the temple 1 has a sliding face 11a, to contact the sliding face 22a of a bearing 2, on the surface near the bend.
  • the bearing 2 is formed as a spherical part swollen at the end of the end piece 6, and it has a vertical through-hole 2a, to have the pivotally rotatable shaft 11 inserted in it, and at the top of the through-hole 21, a recess 23 capable of arranging the said flange 12 and surrounded by a cylindrical wall and the support face 23a for the elastic means 3, is formed.
  • a cut-out portion 22 is formed by a top horizontal fan-shaped sliding face 22a and both side vertical contact faces 22b and 22c.
  • the elastic means 3 in this example is a coil spring that can give resilience vertically, and it is loosely provided around the pivotally rotatable shaft 11, being compressed between the bottom face of the flange 12 and the support face 23a of the bearing 2.
  • the elastic means 3 acts to give a predetermined pressure to the bearing 2, to keep the sliding face 11a of the temple 1 in slidable contact with the sliding face 22a of the bearing 2. Therefore, if the pivotally rotatable shaft 11 is pivotally rotated to pivotally turn the temple 1, a predetermined frictional force acts.
  • the elastic means 3 keeps them in mutual contact. So, no play occurs, and the temple turning torque can be kept almost constant. Since the cut-out portion 22 of the bearing 2 has two vertical contact faces 22b and 22c formed, the temple 1, which is turned over and away from the pair of lenses, can reliably stop at respectively predetermined positions.
  • the connecting portion between the temple 1 and the rim 5 is concealed, and furthermore, the elastic means 3 is concealed inside the bearing 2. So, the spectacle frame looks smart. As shown in Fig. 4 as the second example, if the circumference of the flange 12 is kept within the circumference of the bearing 2, the appearance and design can be further improved.
  • the present invention can be variously modified in design, such as adopting a synthetic rubber cylinder as the elastic means 3, as shown in Fig. 6.
  • the sliding face 22a can be formed as a slope with a slight angle, to make the frictional resistance for turning the temple 1 over the pair of lenses different from that for turning the temple 1 away from the pair of lenses, or the slope can be large in angle, to structurally allow the temple 1 to be automatically turned over or away from the pair of lenses. All of these modifications are included in the present invention.
  • grooves 22d and 22e are formed at predetermined positions of the sliding face 22a.
  • the sliding face 11a of the temple 1 moving on the sliding face 22a of the bearing 2 fits the groove 22d, to be resiliently held when the temple 1 is turned away from the pair of lenses, and fits the other groove 22e, to be resiliently held when the temple 1 is turned over the pair of lenses, respectively to give a feeling of a click.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

A hinge structure of a spectacle frame has bearings 21 formed at the ends of end-pieces 6 provided outside a pair of lenses 4 or outside rims 5 supporting the lenses. Pivotally rotatable shafts 11 at the tips of a pair of temple-pieces 1 are pivotably connected with the bearings. At one end of each bearing, a compressed elastic means 3 encircles a portion of the pivotable shaft exposed in a recess 23 between a flange 12 at the end of the shaft and a base 23a of the recess. The elastic means applies pressure to the bearing to keep a sliding face 11a of the temple-piece at the opposite end of the bearing in slidable contact with a radial sliding face 22a of the bearing.

Description

    BACKGROUND OF THE INVENTION 1. Field of the Invention
  • The present invention relates to a hinge structure of a spectacle frame.
  • 2. Prior Art
  • In the conventional spectacle frame, the end pieces of a pair of lens-holding rims are connected with a pair of temples, or temple-pieces, or earpieces, by very small screws.
  • With the spectacle frame, the manual touch, or feel, felt when the temples are turned over and away from the pair of lenses is an important factor affecting the handling convenience of the spectacles. The touch is mainly affected by the frictional resistance between the ends of the end pieces of the rims holding the pair of lenses and the ends of the temples. The conventional spectacle frame, in which the frictional resistance is greatly affected by the tightening degree of the screws, has the following disadvantages.
  • First, since the screws are very small, the frame assembling work is troublesome, and skill is required for adjusting the tightening degree. Second, the screws often loosen during use of the spectacles, and they must be tightened each time. Third, too loose screwing causes play, and too tight screwing makes the frictional resistance so large as to inconvenience temple turning, and it can wear the parts concerned on their sliding faces if the spectacles are used for a long time with too tight screwing. In this case, since the screws are limited in threaded length, the connected parts cannot be pressed enough to keep the sliding faces to compactly contact with each other, causing play. Fourth, the connected portions are exposed, making the appearance and design awkward.
  • SUMMARY OF THE INVENTION
  • The invention provides a hinge structure for a spectacle frame as defined in the appendent independent claim, to which reference should now be made. Preferred features of the invention are defined in subclaims dependent therefrom.
  • Advantageously, the invention may thus provide a hinge structure of a spectacle frame that overcomes the disadvantages of the conventional hinge structure, that is functionally excellent because of easy assembling, needs no complicated adjustment, and is able to keep the temple turning torque constant for a long time; and that is also excellent in appearance and design.
  • In a preferred embodiment, the above hinge structure of a spectacle frame has bearings formed at the ends of end pieces provided outside the rims supporting the lenses and pivotally rotatable shafts at the tips of a pair of temples are pivotally rotatably connected with them. The said bearings preferably comprise enlarged portions in a shape such as a cube or sphere at the ends of the end pieces, having a vertical through-hole, a cut-out portion formed at the bottom of the said through-hole and surrounded by a top sliding face and both side contact faces, and a recess formed at the top of the said through-hole, a support face at the bottom.
  • The said temples advantageously have the pivotally rotatable shaft bent almost at right angles at its tip with some length and inserted in the through-hole of the bearing, a top sliding face near the bend to slidably contact the sliding face of the said cut-out portion, and a flange protruded at the tip of the pivotally rotatable shaft exposed from the recess.
  • In the above preferred embodiment of the hinge structure of a spectacle frame, a compressed elastic means, such as a coil spring or a synthetic rubber cylinder, is provided around the pivotally rotatable shaft exposed in the recess between the flange and the support face. The elastic means acts to give a predetermined pressure to the bearing, to keep the sliding face of the temple in slidable contact with the sliding face of the bearing.
  • Therefore, if the pivotally rotatable shaft is pivotally rotated to pivotally turn the temple, a predetermined frictional force acts.
  • BRIEF DESCRIPTION OF THE DRAWINGS
    • Figure 1 is a perspective view showing the whole of a spectacle frame using the hinge structure of the present invention;
    • Figure 2 is an expanded sectional view showing an essential portion for illustrating a first example of the hinge structure of the present invention;
    • Figure 3 is an exploded view for illustrating how the first example of the hinge structure of the present invention is composed;
    • Figure 4 is an expanded sectional view showing an essential portion for illustrating a second example of the hinge structure of the present invention;
    • Figure 5 is an expanded view showing an essential portion for illustrating a third example of the hinge structure of the present invention;
    • Figure 6 is an expanded sectional view showing an essential portion for illustrating a fourth example of the hinge structure of the present invention.
    DETAILED DESCRIPTION OF THE INVENTION
  • As shown in Fig. 1, a pair of rims 5 with a lens fitted in them respectively are connected and held symmetrically by a bridge 8 provided with nose pads 7 on both sides, and outside the rims 5 on both sides, a pair of end pieces 6 are provided. Each symmetrical half of the hinge structure consists of a pivotally rotatable shaft 11 acting as a spindle for connection, a bearing 2 with a through-hole 21 to bear the pivotally rotatable shaft 11, and an elastic means formed as a coil spring to bear the temple turning resistance, described later.
  • The pivotally rotatable shaft 11 of the first example has external thread 11A formed at its top, and is threadedly engaged with a spherical flange 12 larger in diameter than the pivotally rotatable shaft 11. The pivotally rotatable shaft 11 is bent almost perpendicularly toward the temple 1. These parts: the flange 12, the pivotally rotatable shaft 11, and the temple 1, can be respectively separate parts, or they can be formed as an integral part as shown in Fig. 4.
  • The temple 1 has a sliding face 11a, to contact the sliding face 22a of a bearing 2, on the surface near the bend.
  • The bearing 2 is formed as a spherical part swollen at the end of the end piece 6, and it has a vertical through-hole 2a, to have the pivotally rotatable shaft 11 inserted in it, and at the top of the through-hole 21, a recess 23 capable of arranging the said flange 12 and surrounded by a cylindrical wall and the support face 23a for the elastic means 3, is formed.
  • On the other hand, at the bottom of the through-hole 21 of the bearing 2, as shown in Fig. 3, a cut-out portion 22 is formed by a top horizontal fan-shaped sliding face 22a and both side vertical contact faces 22b and 22c.
  • The elastic means 3 in this example is a coil spring that can give resilience vertically, and it is loosely provided around the pivotally rotatable shaft 11, being compressed between the bottom face of the flange 12 and the support face 23a of the bearing 2. The elastic means 3 acts to give a predetermined pressure to the bearing 2, to keep the sliding face 11a of the temple 1 in slidable contact with the sliding face 22a of the bearing 2. Therefore, if the pivotally rotatable shaft 11 is pivotally rotated to pivotally turn the temple 1, a predetermined frictional force acts.
  • In the above spectacle frame, even if the sliding faces 11a and 22a are worn by long-time use, the elastic means 3 keeps them in mutual contact. So, no play occurs, and the temple turning torque can be kept almost constant.
    Since the cut-out portion 22 of the bearing 2 has two vertical contact faces 22b and 22c formed, the temple 1, which is turned over and away from the pair of lenses, can reliably stop at respectively predetermined positions.
  • Thus, in the hinge structure of the present invention, since the turning of the temple 1 is controlled by the contact faces 22b and 22c of the cut-out portion 22 of the bearing 2, the connecting portion between the temple 1 and the rim 5 is concealed, and furthermore, the elastic means 3 is concealed inside the bearing 2. So, the spectacle frame looks smart. As shown in Fig. 4 as the second example, if the circumference of the flange 12 is kept within the circumference of the bearing 2, the appearance and design can be further improved.
  • The present invention can be variously modified in design, such as adopting a synthetic rubber cylinder as the elastic means 3, as shown in Fig. 6. As other examples of design modifications, the sliding face 22a can be formed as a slope with a slight angle, to make the frictional resistance for turning the temple 1 over the pair of lenses different from that for turning the temple 1 away from the pair of lenses, or the slope can be large in angle, to structurally allow the temple 1 to be automatically turned over or away from the pair of lenses. All of these modifications are included in the present invention. In the hinge structure as the third example, as shown in Fig. 5, grooves 22d and 22e are formed at predetermined positions of the sliding face 22a.
  • In this example, the sliding face 11a of the temple 1 moving on the sliding face 22a of the bearing 2 fits the groove 22d, to be resiliently held when the temple 1 is turned away from the pair of lenses, and fits the other groove 22e, to be resiliently held when the temple 1 is turned over the pair of lenses, respectively to give a feeling of a click.

Claims (8)

  1. A hinge structure of a spectacle frame, in which bearings 2 are formed at the ends of end pieces 6 provided outside a pair of lenses 4 or outside the rims 5 supporting the lenses 4, and pivotally rotatable shafts 11 at the tips of a pair of temples 1 are pivotally rotatably connected with the bearings 2, comprising:
    each of the said bearings 2, being provided with a vertical through-hole 21, a cut-out portion 22 formed at the bottom of the said through-hole 21 and surrounded by a top sliding face 22a and both side contact faces 22b and 22c, and a recess 23 formed at the top of the said through-hole 21 and having a support face 23a at the bottom; each of the said temples 1, being provided with the pivotally rotatable shaft 11 bent almost at right angles at its tip with some length and inserted in the through-hole 21 of the bearing 2, a top sliding face 11a near the bend to slidably contact the sliding face 22a of the said cut-out portion 22, and a flange 12 protruded at the tip of the pivotally rotatable shaft 11 exposed from the recess 23; and a compressed elastic means 3, being provided around the pivotally rotatable shaft 11 exposed in the recess 23 between the flange 12 and the support face 23a, to give pressure to the bearing 2 for keeping the sliding face 11a of the temple 1 in slidable contact with the sliding face 22a of the bearing 2.
  2. A hinge structure of a spectacle frame, according to claim 1, wherein the elastic means 3 is a coil spring.
  3. A hinge structure of a spectacle frame, according to claim 1, wherein the elastic means 3 is a rubber.
  4. A hinge structure of a spectacle frame, according to claim 1 through 3, wherein at least either of grooves 22d and 22e is provided at least on either of the ridges formed by the sliding face 22a and the contact faces 22b and 22c of the bearing 2.
  5. A hinge structure of a spectacle frame, according to any of claims 1 through 4, wherein the said pivotally rotatable shaft 11 and the said flange 12 are formed integrally.
  6. A hinge structure of a spectacle frame, in which bearings (2) are formed at the ends of end pieces (6) provided outside a pair of lenses (4) or outside the rims (5) supporting the lenses (4) and pivotally rotatable shafts (11) at the tips of a pair of temple-pieces (1) are pivotally rotatably connected with the bearings (2), comprising:
    each of the said bearings (2), being provided with a through-hole (21), a cut-out portion (22) formed at one end of the said through-hole (21) and surrounded by a sliding face (22a) and side contact faces (22b and 22c) , and a recess (23) formed at the opposite end of the said through-hole (21) and having a support face (23a) at its base; each of the said temple-pieces (1), being provided with the pivotally rotatable shaft (11) bent almost at right angles at its tip with some length and inserted in the through-hole (21) of the bearing (2), a top sliding face (11a) near the bend to slidably contact the sliding face (22a) of the said cut-out portion (22), and a flange, or end piece, (12) protruding at the tip of the pivotally rotatable shaft (11) exposed from the recess (23); and an elastic means (3), being provided between the flange (12) and the support face (23a) for urging the sliding face (11a) of the temple-piece (1) into slidable contact with the sliding face (22a) of the bearing (2).
  7. A hinge structure of a spectacle frame, according to claim 6, wherein the elastic means (3) is a spring.
  8. A hinge structure of a spectacle frame, according to claim 6 or 7, wherein the elastic means (3) is of rubber.
EP95309030A 1995-12-12 1995-12-12 A hinge structure of a spectacle frame Withdrawn EP0779532A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95309030A EP0779532A1 (en) 1995-12-12 1995-12-12 A hinge structure of a spectacle frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95309030A EP0779532A1 (en) 1995-12-12 1995-12-12 A hinge structure of a spectacle frame

Publications (1)

Publication Number Publication Date
EP0779532A1 true EP0779532A1 (en) 1997-06-18

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EP95309030A Withdrawn EP0779532A1 (en) 1995-12-12 1995-12-12 A hinge structure of a spectacle frame

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831677A1 (en) * 2001-10-29 2003-05-02 Gilles Waechter Screw-less hinge for spectacle frame comprises ball and socket joint with female component on frame and cylinder with ball on side piece

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1955690A (en) * 1931-09-19 1934-04-17 Spill Mfg Co Inc Glasses and the like
DE3821824A1 (en) * 1988-06-29 1990-01-04 Jost Schmidt Spectacles
WO1993022704A1 (en) * 1992-05-07 1993-11-11 Tesch Ag Spectacles with holding side pieces hingedly linked to the frame for the lenses
GB2281979A (en) * 1993-09-21 1995-03-22 Nakanishi Optical Corp Joints for spectacles sides
DE4341830A1 (en) * 1993-12-08 1995-06-14 Wolfgang Proksch Spectacles with two lenses and frame
EP0667552A1 (en) * 1994-02-15 1995-08-16 Mitsuo Kobayashi Eyeglasses frame

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1955690A (en) * 1931-09-19 1934-04-17 Spill Mfg Co Inc Glasses and the like
DE3821824A1 (en) * 1988-06-29 1990-01-04 Jost Schmidt Spectacles
WO1993022704A1 (en) * 1992-05-07 1993-11-11 Tesch Ag Spectacles with holding side pieces hingedly linked to the frame for the lenses
GB2281979A (en) * 1993-09-21 1995-03-22 Nakanishi Optical Corp Joints for spectacles sides
DE4341830A1 (en) * 1993-12-08 1995-06-14 Wolfgang Proksch Spectacles with two lenses and frame
EP0667552A1 (en) * 1994-02-15 1995-08-16 Mitsuo Kobayashi Eyeglasses frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831677A1 (en) * 2001-10-29 2003-05-02 Gilles Waechter Screw-less hinge for spectacle frame comprises ball and socket joint with female component on frame and cylinder with ball on side piece

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